Conclusions
Redox presents a rapid measurement of soil oxidative-reductive status.
When applied to a simplified soil drying-rewetting test, it could be
used to classify soils into oxidized and reduced. In addition, the redox
status correlated with CO2burst, indicating that it can
quantify the amount of readily available substrates for microbial
activity. When combined with organic matter concentration, it could
explain most of the variability in measured CO2burst
results. It also correlated with soil structure and texture, making it a
promising general indicator of soil conditions. Simultaneously, the
correlation with soil texture and structure and the fact that it is an
outcome of several reduction-oxidation reactions, makes interpretation
of redox challenging. Currently, it can be used as an index for soil
health, but more studies on the mechanisms of redox and it’s change over
time could reveal, what are the soil processes it is an indicator of.